<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 流年 <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用公共文件

/**
 * 自定义分表规则
 *
 * @param int $num
 * @return string
 */
function myMod($num)
{
    if ($num % 10 - 1 < 0){
        return 0;
    }
    //var_dump($num % 10 - 1);;
    return chr($num % 10 - 1);
}